snapshot: 数据源管理+大屏增强前快照

frontend/src/components/layout/Sidebar.tsx

@@ -86,9 +86,9 @@ const menuItems: MenuItem[] = [
     name: '监控中心',
     icon: Bell,
     children: [
+      { id: 'grafana', name: '监控大屏', icon: Monitor, path: '/dashboards' },
       { id: 'monitor-center', name: '资源监控', icon: Activity, path: '/monitor-center' },
       { id: 'metrics', name: '指标监控', icon: Cpu, path: '/metrics' },
-      { id: 'grafana', name: '监控大屏', icon: Monitor, path: '/dashboards' },
       { id: 'trace', name: '链路追踪', icon: GitBranch, path: '/trace' },
       { id: 'alert-center', name: '告警服务', icon: Bell, path: '/alert-center' },
     ],